Make QFastMetaBuilder generate revision 7 meta-objects

Make QFastMetaBuilder generate revision 7 meta-objects

Support for revision <= 6 will go away in Qt5.

This commit updates QFMB to match the latest format generated by moc:
  - Store string table as an array of QByteArrayData (literals)
  - Store only the meta-method name, not the full signature
  - Don't store parameter names as a comma-delimited string
  - Store explicit information about parameters (count, types, names)

Since the meta-data can now hold type ids > 256, there is no need to
store the names of property/parameter types at all anymore.

Change-Id: I487b14d22b2a92d9e6a9aa4e348f4bab181daff4
Reviewed-by: Aaron Kennedy <aaron.kennedy@nokia.com>